Architected microlattices for structural and functional applications: Lessons from nature
Architected microlattices for structural and functional applications: Lessons from nature
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DOI：
10.1016/j.matt.2023.01.017
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发表时间：
2023-02
期刊：
影响因子：
18.9
通讯作者：
Zian Jia;Hongshun Chen;Zhifei Deng;Ling Li
中科院分区：
文献类型：
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作者：
Zian Jia;Hongshun Chen;Zhifei Deng;Ling Li
制造周期性微晶格是获得具有高比刚度和强度以及光学、声子、微流体和许多其他不寻常特性的材料的重要工程方法。设计的微晶格也天然存在于生物材料系统中，其通常表现出优于合成材料的特殊性能。在这里，我们报告了最近在海星小骨中发现的一种独特的双尺度单晶结构，并讨论了我们从这种特殊的双尺度微晶格和自然界中其他微晶格结构中学到的经验教训，其中包括（1）微晶格的架构设计，以提高强度、韧性和损伤容限； （2）双尺度（材料尺度和微晶格尺度）并行设计，实现卓越的机械、压电、热电和多功能性能； (3)仿生增材制造策略。所学到的知识通过同时优化材料和结构水平的各向异性并实现多尺度功能协同作用，开辟了生产新型架构微晶格的新途径。
Making periodic architected microlattices is an important engineering approach to acquiring materials with high specific stiffness and strength as well as optical, phononic, microfluidic, and many other unusual properties. Architected microlattices also occur naturally in biological material systems, which often exhibit special properties superior to their synthetic counterparts. Here, we report a unique dual-scale single crystalline structure that was recently found in the starfish ossicles and discuss the lessons we learned from this special dual-scale microlattice among other architected microlattices in nature, which include (1) the architecture design of microlattices for improved strength, toughness, and damage tolerance; (2) the dual-scale (material scale and microlattice scale) concurrent design for extraordinary mechanical, piezoelectric, thermoelectric, and multifunctional properties; and (3) the bio-inspired additive manufacturing strategies. The learned knowledge opens new pathways to produce novel architected microlattices by simultaneously optimizing the material- and structural-level anisotropies and achieving multiscale functional synergy.